후방압출 공정에서 금형과 제품변형 관계에 대한 연구

이강희,박용복,박태식 公州大學校工科大學生産技術硏究所 1999 論文集 Vol.7 No.-

The die for cold forging gets a very high axial load and radial pressure during processing and hence deforms considerably in the radial direction. This radial deformation of die becomes a important factor influencing the dimensional accuracy of a product. In order to obtain a product with highly accurate dimension. Therefore, it is essential to acquire some information on elastic deformation of the die and the product. The study has been performed for the relation of the deformation between a die and a product in backward extrusion. The strain of the die has been given by the simple experiment using the strain gauges attached to the outer surface of the die. Also the history of the deformation of the die and the product has been given by the experiment and Lame's formula. The results has been compared with the previous another method. The study has given useful results for the deformation history of the die and the product through the experiment and Lame's formula in backward extrusion, which can be applied in the die design for the product with accurate dimension.

프리텐셔너가 장착된 시트벨트 시스템의 관성잠김 안전버클 개발

탁태오,국민구,김대희,박재순,신승언,최석 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.A

To improve passenger safety, seat belt systems with pre-tensioner that tightens seat belt webbing using explosive just before collision are widely used these days. Even though seatbelt must not unlatched without passengers' operation. explosive power of pre-tensioner can cause unlocking of a buckle. To prevent the unlocking, an anti-g mass that blocks displacement of the release button has been attached to the buckle. In this study, the dynamics and statics of locking mechanism associated with operation of anti-g buckle has been theoretically investigated, and important design variables that affect the operation of anti-g buckle have been identified. Through the total seat belt system's dynamic simulation using force and displacement inputs obtained from seat belt sled test, design of the proposed anti-g buckle has been validated.

휠체어댄스스포츠 : 사회적에서 경쟁적인 스포츠로 From Social to Competitive Sport

김태수,최윤희,강선영 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

This presentation focus on the way of show to spread wheelchair dance sport among disabled people and integrate wheelchair dance sport in recreational and in competitive way into korea as well as International Paralymic Committee Wheelchair dance sport. Today, There is a little resource at this moment event hough when the first International competition in Wheelchair dance sport took place in Sweden on 1977. because Wheelchair dance sport was the latest sport to become an "IPC sport" in 1998. Wheelchair dancing emanated from ballroom dancing associated with dancers who were not disabled. It can be to participate all kind of different disabled people with wheelchair to join Wheelchair dance sport which is so social and recreational at the same time, combi-dance is a natural way for the disabled person to interact with a person without a disability. In wheelchair dance sport both partners are equal in all fields of psychological, social, and physical rehabilitation when developing the action of motion. Actually, Wheelchair dance sport is the new way to integrate with a disability and without disability as well as inter disability. It seem to new method in a form of social hobby with disabled person to interact with a person without a disability. The most important goal in wheelchair dance sport is to direct the efforts of work for close contact disabled people to improve every day life skill and their health, social relationship with able body.

모터구동형 안전벨트 리트랙터의 구동 메커니즘 설계

탁태오,박재순,국민구,김대희,신승언,최석 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.A

Motorized retractors enhance the safety of passengers by removing the slack of webbing and by holding upright driving position. Reliability of a driving mechanism that includes one-way clutch between the driving motor and webbing is directly linked to the safety of passenger. In this research, conditions for locking one-way clutch, and also conditions for sustaining locking are theoretically investigated. The operation of a motorized retractor under realistic conditions is simulated in order to validate the proposed retractor design.

계피의 부위별 cinnamic acid 와 cinnamic aldehyde 정량

이태희,문정호,김인락 대한본초학회 2001 大韓本草學會誌 Vol.16 No.2

In order to prove which layer of Cinnamomi cortex had been used in Oriental medicine, the contents of cinnamic acid and cinnamic aldehyde as indexd component on 3 different layers of Cinnamomi Cortex were analysed respectively The results were: 1. The cinnamic acid contents of Cassiae Cortex Interior was 0.135%, inner bark layer, 0.031%, peridium, 0.023%, and average, 0.068%. 2. The cinnamic aldehyde contents of Cassiae Cortex Interior was 1.686%, inner bark layer 0.139%, peridium, 0.183%, and average, 0.696%. From the above results, it is suggested that the main part of Cinnamomi Cortex showed pharmacological activity is its interior.

모터구동형 안전벨트 리트랙터의 구동 메커니즘 설계

탁태오,박재순,국민구,김대희,신승언,최석 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.B

Motorized retractors enhance the safety of passengers by removing the slack of webbing and by holding upright driving position. Reliability of a driving mechanism that includes one-way clutch between the driving motor and webbing is directly linked to the safety of passenger. In this research, conditions for locking one-way clutch. and also conditions for sustaining locking are theoretically investigated. The operation of a motorized retractor under realistic conditions is simulated in order to validate the proposed retractor design.

고속 IP주소룩업을 위한 새로운 CAM 구조

안희일,조태원 충북대학교 컴퓨터정보통신 연구소 2001 컴퓨터정보통신연구 Vol.9 No.1

라우터의 인터넷 패킷 처리에서 가장 많은 시간이 걸리는 부분이 Internet protocol(IP) 패킷에 대한 주소룩업(address lookup)이다. 기존의 IP주소룩업 방법은 라우터의 룩업 테이블의 갱신속도에 대한 고려 없이, 룩업 처리율만 높이는데 주력해왔다. 룩업 테이블의 느린 갱신속도로 인해 룩업정지(lookup blocking) 또는 시효가 지난 경로(obsolete route)에 의한 부정확한 라우팅이 발생할 수 있어, 고속의 라우팅에서는 갱신시간이 짧은 룩업방법이 절실히 필요하게 되었다. 특히 기존 CAM(content addressable memory, 내용 주소화 메모리)을 이용한 IP 룩업에서는 룩업처리율이 높으면서 동시에 복잡도도 높지 않은 방식은 룩업 테이블의 갱신시간의 order가 O(n)으로 오래 걸렸다. 본 논문에서는 룩업 테이블의 갱신시간의 order가 O(1)으로 짧으면서도, 룩업처리율이 높고, 복잡도도 높지 않은 새로운 방식의 CAM 구조인 PICAM(pipelined CAM)을 제안한다. IP address lookup is a major bottleneck of IP packet processing in high speed router. Existing IP lookup methods are focused only on lookup throughput without considering lookup table update. So their slow update can lead to lookup blocking or wrong routing decision based on obsolete routes. Especially existing IP lookup methods based on CAM(content addressable memory) have slow update of order of O(n) cycles in spite of their high throughput and low area complexity. In this paper we propose PICAM(pipelined CAM), a new CAM architecture for fast update of order of O(1) cycle of lookup table and high throughput and low area complexity on IP address lookup.

프리텐셔너가 장착된 시트벨트 시스템의 관성잠김 안전버클 개발

탁태오,국민구,김대희,박재순,신승언,최석 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.B

To improve passenger safety, seat belt systems with pre-tensioner that tightens seat belt webbing using explosive just before collision are widely used these days. Even though seatbelt must not unlatched without passengers' operation. explosive power of pre-tensioner can cause unlocking of a buckle. To prevent the unlocking, an anti-g mass that blocks displacement of the release button has been attached to the buckle. In this study, the dynamics and statics of locking mechanism associated with operation of anti-g buckle has been theoretically investigated, and important design variables that affect the operation of anti-g buckle have been identified. Through the total seat belt system's dynamic simulation using force and displacement inputs obtained from seat belt sled test, design of the proposed anti-g buckle has been validated.

최대 암에르고미터 운동 시 경험 유·무에 따른 척수 장애인의 환기역치 비교

김태수,김성수,윤성진,황부근,이동희,이강우 한국특수체육학회 2004 한국특수체육학회지 Vol.12 No.3

The purpose of this study was to determine the effect of state for training at the VT using other relative physical factors as like a VT-Sec, VT-VO2peak, VT/VO2peak%, VO2peak, VT-HRpeak, VT/HRpeak%, HRpeak, with individuals with spinal cord injuries. The participants were composed of 7 spinal cord injured wheelchair basketball athletes who are involved with regular activity, 5 spinal cord injured sedentaries who are not involved any regular activity. The statistical procedures used to the analysis were unpaired T-test. The results were as follows; First, the significant differences in VT-Sec, VO2peak were observed between 2 groups. Second, the validity of 44-72VT/V O2peak% and 56.78VT/HRpeak% is suggested as an alternative exercise intensity by individuals with all spinal cord injuries.

都市計劃 用度地區 指定 및 都市設計에 관한 硏究 : 新都市에 있어서 地域施設의 供給計劃에 관하여 On the Supply Plan of Regional Facilities in New Town

丁泰燮,洪熙澤 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

This study aims to investigate actual conditions of the supply of community facilities of cities in Korea and Japan, by surveying the number of facilities per unit population, and to obtain the fundamental data for regional planning in Korea through comparative analyses. Followings are the results of this investigation : 1) High correlations are found between the population and the number of facilities. 2) The original unit of facilities are classified into four types according to the size of the population and the population density. 3) In general the original unit of facilities and the population per unit facilities hold higher level in Japan than in Korea, but some kinds of facilities stand approximately the same level in both countries.